Baldwin will earn $5.6 million this season in the final year of a deal he signed in 2014. The extension will keep Baldwin under contract with Seattle through 2020, and is worth over $11 million a year, according to Schefter.

Baldwin joined Seattle as an undrafted free agent in 2011. He had his best year as a pro last season, catching 78 passes for 1,069 yards, and tying for the league lead with 14 touchdowns.